NATO's US-led International Security Assistance Force gave no further details and did not release the nationality of the dead soldier.

"An International Security Assistance Force service member was killed today when an individual wearing an Afghan National Police uniform turned his weapon against the service member in eastern Afghanistan," it said.

There have been an increasing number of incidents in which Afghan security forces have turn their weapons on their foreign military counterparts.

In the deadliest such attack, eight US troops and an American contractor were killed when an Afghan ex-pilot opened fire after a row at a Kabul training centre on April 27.

In many such incidents, the attackers were Taliban infiltrators.

The 140,000 strong US-dominated international military in Afghanistan is engaged in a massive drive to train Afghan police and army to take over before all foreign combat troops leave the country in 2014.

ISAF said another soldier had been killed in an insurgent attack in eastern Afghanistan on Tuesday, again without giving further details.

Copyright AFP (Agence France-Presse), 2011